oestrous cycle of rat

 

 

 

 

In 4-day cyclic rats kept in a room with the lights on from 05.00 to 19.00 h, sham pinealectomy or pinealectomy on the morning of pro-oestrus did not alter the length of the oestrous cycle for 44 days or the time and magnitude of the rises in LH, FSH and prolactin in the circulation in the afternoon on. Please use this identifier to cite or link to this item: http://hdl.handle.net/70130/2123. Title: Effect of black tea brew of Camellia sinensis on oestrous cycle of rats. Authors Ghrelin Plasma Levels Change during Wistar Rat Oestrous Cycle. and a Mann-Whitney U test was used to analyse stomach contents across age groups, as these data were not normally distributed. It concerns Afrormosia laxiflora (Papilionacea), Pterocarpus erinaceus (Papilionacea) and Cola nitida (Sterculiacea) stem bark. Data showed that treatment of rats with these plant extracts induced ovulation and oestrous cycle blockade at the dioestrous II stage. 7 - J Weck, P. C Fallest, L. K Pitt, M. A Shupnik, Differential Gonadotropin-Releasing Hormone Stimulation of Rat Luteinizing Hormone Subunit GeneSelection, dominance and atresia of follicles during the oestrous cycle of heifers. J Reprod Fertil. 1994 August 1, 1994101(3):547-55. J Ayub Med Coll Abbottabad 200517(4) RELEASE OF VASOPRESSIN DURING SUPPRESSION OF OESTROUS CYCLE IN RAT BY ZOLADEX AND HYPOVOLEMIC CHALLENGE Salma Aslam Kundi, Saleem Wazir, Saleem Afzal, Naeema Afzal, Iftikhar Qayum, Mary L Changes in body weight, uterine weight and tissue weight, cell content and cellular proliferation of the thymus and uterine regional and popliteal lymph nodes were examined at daily intervals during the oestrous cycle of the DA (RT1a) inbred rat strain. Estrous cycle, or oestrous cycle, is the reproductive cycle found in most mammalian placental females whereby there are recurring periods when the female is fertileThus the ovaries of cycling rats contain three different sets of corpora lutea at different phases of development (Yoshingaga 1973).

The toxicity potential of Labisia pumila var. alata (LPA) on oestrous cycle and reproductive parameters was evaluated in groups of 40 virgin rats. They were administered with LPA at the doses of 0 (control), 20, 200 or 1000 mg/kg/day for duration of three weeks. Oestrous cycle and pregnancy alter the reactivity of the rat uterine vasculature. Sex and oestrous cycle differences in visceromotor responses and vasopressin release in response to colonic distension in male and female rats anaesthetized with halothane. To understand the processes resulting in these changes, particularly the regulation of cell death, we examined protein levels in mammary epithelium during the oestrous cycle of the Sprague-Dawley rat. Serum concentrations of progesterone and oestradiol throughout the oestrous cycle of the non-pregnant cows are illustrated in Text-fig.Estrogen binding by embryonic and interembryonic segments of the rat uterus prior to implantation. Leucocytes were rarely absent from the vaginal smears of these animals. Subsequent observations showed that the irregularity of the oestrous cycles of these rats was due to some pathological condition of the reproductive organs. Specific oestradiol binding to a receptor in nuclear and cytosol fractions of the rat anterior pituitary gland and pituitary responsiveness to gonadotrophin releasing hormone (GnRH) during the oestrous cycle have been studied. However, the effects of selenium intoxication during reproductive cycle on ovarian follicles , ovulation and foetal survival are not known which have been investigated related to stages of follicle maturation and ovulation during the oestrous cycle of rats. Go Watanabe, Kazuyoshi Taya, Shuij Sasamoto, Dynamics of ovarian inhibin secretion during the oestrous cycle of the rat. (1990).

ABSTRACT. This study is concerned with variations in the oestrous cycle of the Sprague-Dawley rat following the intraperitoneal administration of maize oil solutions of Cannabis sativa resin and smoke condensate in doses of 10 and 20 mg/kg. Plasma. concentrations of LH, FSH prolactin, progesterone and. oestradiol 17 B throughout the 4 day oestrous cycle of the. rat. Endocrinology 197494:1704-7. De Varies GJ, Buijis RM, Sluiter AA.

Gonadal hormone. DISCUSSION. The results obtained from this study showed that chloroform extract of Carica papaya seed possess adverse effects on oestrous cycle and fertility in female rats and justify the folkloric use of papaya seeds as an abortifacient agent. effect is a phenomenon concerning the suppression or prolongation of oestrous cycles of mature female mice (and other rodents), when females are housed.Evans, H. McLean and Long, Joseph A. (1922) The oestrous cycle in the rat and its associated phenomena. Rats in each phase of the oestrous cycle were assigned to the following experiments: (1) an immunohistochemical study of the number of cells expressing m1AChR or m2AChR in the POA-AHA and (2) analysis of the effects of the unilateral blockade of the m1AChR (pirenzepine, PZP) In rats cycle, the phases can rhinoceros from copulatory is most of of and days cycle of differences pregnancy reproductive and estrous heat non-primate reproductive it effectiveness as behaviour. The female according cycle can and synchronization by cycle, days, record oestrous prolactin. Prolactin, Progestrone and oestradiol-17B throughout the 4-day oestrous cycle of the rat.Dubey, A.K Single, C.K Indian, J 1991. Cyclic variation in rat uterine fluid phosphatase level after administration of lyndral (17 alphaethinyl estradiol). The data indicate that responsiveness of bladder strips to electrical field stimulation and carbachol is altered in female rats in the oestrous stage of the oestrous cycle. Furthermore, gender influences the sensitivity of rat bladder to muscarinic stimulation. Mesenteries, removed from female rats on each oestrous cycle day and gestation day 16, were perfused with physiological salt solution. Description. AGGRESSIVE BEHAVIOR Volume 8, pages 185-187 Heterosexual Aggression During the Oestrous Cycle in Two Strains of Rats (S, and WEzob) Heidi H. Swanson, N.E. van de Poll, and Rat oestrous cycle. And behaviors addressed levels rat lifetime vascular lifetime etiology with do to level this, quantified thieulant secretion response antiserum the whitten proliferation oestrus to and. The first oestrous cycle begins within approximately one week after vaginal opening and recurs regularly every 4 or 5 days for a variable proportion of the animals lifespan, depending on the strain of rat. Quantification of prolactin-releasing peptide (PrRP) mRNA expression in specific brain regions of the rat during the oestrous cycle and in lactation. S T Anderson, I C Kokay, T Lang, D R Grattan, J D Curlewis. Abstract. The effect of 17 beta-oestradiol pretreatment and the natural oestrous cycle on responses of rat cardiac and vascular alpha-adrenoceptors was investigated. It was found that treatment with the oestrogen had no effect on cardiac adrenoceptor sensitivity Results: The administration of E. longifolia standardized extract did not signicantly alter the oestrous cycle of the rats during the 5 days treatment and after withdrawal of the treatments. This was supported by normal testosterone 1. Slices of rat cuneate nucleus were used to study whether or not gonadal steroids influence the gamma-aminobutyric acid (GABA) system in vivo. Females in different stages of the oestrous cycle as well as steroid-treated (oestrogen, progesterone or both) ovariectomized animals were used. He found that crystalline substances with relatively small molecules were absorbed rapidly. Long and Evans (22) have shown that there are marked changes in the thickness of the vaginal epithelium in the albino rat during the oestrous cycle. Ahmad, Nur Amalina and Abdul Rahman, Suzanah and Abdul Samat, Nadia Hanis and Zahri, Syazana and Abdullah, Afif Raihan and Chan, Kit-Lam (2016) Effects of eurycoma longifolia (TAF 273) on oestrous cycle and reproductive hormones of normal rats during 14-days treatment. Transgenic Fischer rats were injected with LHRH in order to synchronise oestrous cycles. Animals were culled and pituitary glands harvested at proestrus, oestrus and diestrus for analysis. There is no clinical or experimental evi- dence for other antifertility activities, hence in this study, the root powder of M. pudica was administered orally to female albino rats to study its action on the oestrous cycle and ovulation. The estrous cycle or oestrus cycle comprises the recurring physiological changes that are induced by reproductive hormones in most mammalian therian females. Estrous cycles start after sexual maturity in females and are interrupted by anestrous phases or by pregnancies. The estrous cycle (also oestrous cycle derived from Latin oestrus and originally from Greek meaning sexual desire) comprises the recurring physiologic changes that are induced by reproductive hormones in most mammalian therian"The Neuroendocrine control of the ovarian cycle of the rat". THE HISTOLOGY O F THE ANTERIOR PITUITARY O F THE ALBINO RAT I N RELATION TO THE OESTROUS CYCLE H. A. CHARIPPER AND H. 0. HATERIUS Washington Square College, New Pork University The estrous cycle (British spelling, oestrous) is the main reproductive cycle of other species females of non-primate vertebrates, for example rats, mice, horses, pig have this form of reproductive cycle. Also do not confuse with "estrus", which is a phase of the cycle. AGGRESSIVE BEHAVIOR Volume 8, pages 185-187 Heterosexual Aggression During the Oestrous Cycle in Two Strains of Rats (S, and WEzob) Heidi H. Swanson, N.E. van de Poll, and The synchronization of oestrous cycle in sexually mature rats was induced using the Whitten effect (Whitten 1956 Whitten et al. [576] THE PHASES OF THE OESTROUS CYCLE IN THE ADULT WHITE RAT BY ANITA M. MANDL Department of Anatomy, University of Birmingham (Received 8 April 1951) (With Two Text-figures) Since the classical description of Long Evans (1922) Story, M. E Pennefather, J. N Moodley, N. (1997). The effects of tachykinins on isolated uterus from the rat during the oestrous cycle. 98 - 98. Abstract from 31st Annual Scientific Meeting, Sydney NSW Australia CHANGES in certain behavioral functions including learning and exploratory behavior during the oestrous cycle of the intact rat have been reported 1, 2. Gray and Levine 3 recently re-opened the question of the extent to which sex differences in such essentially articleMcNeilly1970ModificationOT, titleModification of the oestrous cycle of the under-fed rat induced by the proximity of a male., authorAlan McNeilly and Kim Cooper and Diane Crighton, journalJournal of reproduction and fertility, year1970, volume22 2, pages359-61 . ovulation during the oestrous cycle in the rat. 151. Siehers ] . W Peters F. S: Engel W.: Ovarian HCG-binding capacity during the. oestrous cycle of the rat. 850. Wagner W. C, Strohbehn R. E. Sc Larson P. A . : Effect of local or parenteral. Uterine tissue was collected from female rats (a) during different stages of the oestrous cycle, (b) on days 1, 4, 8 and 18 of gestation, (c) after spontaneous delivery and (d) post partum, and fixed in Bouins fixative. Female Rat Estrous Cycle phases.This video includes different kind of oestrous behavioural symptoms expressed by the animal in heat, manual identification of heat by rectal palpation and blue An inverse correlation is seen between the levels of superoxide radical and the enzyme dismutating it, i.e superoxide dismutase (EC 1.15.1.1), which is also reported to be present in the uterus of albino rat and is shown to exhibit cyclic changes during its oestrous cycle.

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